"Microsoft has some catching up to do. It's not a phrase you hear every day. But whether it's Apple Computer's iTunes-iPod combo or Google's advertising engine, the software maker's top executives readily admit that they are coming from behind. In a rare joint interview ahead of the CES, Microsoft Chairman Bill Gates and CEO Steve Ballmer outlined their plans to catch their rivals and discussed why it's Sony that will have to play catch-up in the video console wars."